200001655673 has 2 divisors, whose sum is σ = 200001655674. Its totient is φ = 200001655672.

The previous prime is 200001655639. The next prime is 200001655681. The reversal of 200001655673 is 376556100002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116681678569 + 83319977104 = 341587^2 + 288652^2 .

It is a cyclic number.

It is not a de Polignac number, because 200001655673 - 2¹⁴ = 200001639289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (200001655873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100000827836 + 100000827837.

It is an arithmetic number, because the mean of its divisors is an integer number (100000827837).

Almost surely, 2^200001655673 is an apocalyptic number.

It is an amenable number.

200001655673 is a deficient number, since it is larger than the sum of its proper divisors (1).

200001655673 is an equidigital number, since it uses as much as digits as its factorization.

200001655673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 35.

Adding to 200001655673 its reverse (376556100002), we get a palindrome (576557755675).

The spelling of 200001655673 in words is "two hundred billion, one million, six hundred fifty-five thousand, six hundred seventy-three".